Answer:
$38.40 new price. Usual coupons give 20% only off the sale price if this is the case for the backpack you would need to show both answers one of 50% if both coupons allowed. Second workings would be your answer 30% of $60 = $18 and 20% further =$3.60 $18+$3.60= $21.60 full 20% discount on store 30% discount.
Therefore you can see $60-21.60 = $38.40 new price.
This is $21.60 discount and appears to be 36.8%
Explanation: